Kim Joonmyun is a normal student at Kangnam Academy, He has a part time job at a shop near his house. He has 2 bestfriends, Yifan and Minseok. He always hangs out with them at lunch or when there's a party going on at someone else's house. He's actually been wanting to date someone, since he's feeling lonely. But some things chaneged in his life when a boy named Oh Sehun arrived at the academy.

Oh Sehun is son of one of the richest that have moved to Korea recently just 3 days ago, His mother, Who owns a popular Vietnamese Jewelry company named Dania. And his father, Who owns the Oh Company. He's not a playboy but he is kind of mean, especially when someone dirties his coat a bit or bumps into him, His boys ( Bestfriends) whe a popular in Kangnam Academy, known as the P5 (Kai, Luhan, Chanyeol and Chen). But things get interesting once he meets Kim Joonmyun.

   Zhang Yixing is a chubby nerdy student, who gets bullied sometimes, he attends Kangnam Academy too. He has a secret crush on Joonmyun, but he doesn't dare to even get close to him, cause he doesn't want to be noticed by him. He has planned to go out with him but he's afraid to be heartbroken and played, like he was, in the past. But then, he dissapears from the school for a while and he comes back to catch Joonmyun's heart.